Study sets matching "statistics chapter 4"

Study sets
Classes
Users

Study sets matching "statistics chapter 4"

Statistics Chapter 4
Bi-variate Data
Response Variable
Explanatory/Predictor Variable
Scatter Diagram
Data in which two variables are measured on an individual
The variable whose value can be explained by the value of the…
The variable whose value explains the response variable
A graph that shows the relationship between two quantitative…
Bi-variate Data
Data in which two variables are measured on an individual
Response Variable
The variable whose value can be explained by the value of the…
20 terms
Statistics - Chapter 4
comparison test for linear correlation
correlation coefficient
scatterplot
response variable
helps determine whether the correlation coefficient is strong…
measures the strength of the linear association between two v…
plot of the values of y, the response variable, vs the corres…
y variable in regression analysis; dependent; outcome
comparison test for linear correlation
helps determine whether the correlation coefficient is strong…
correlation coefficient
measures the strength of the linear association between two v…
Chapter 4 Statistics Vocabulary
Population
Sample
Sample Survey
Convenience Sample
The ... in a statistical study is the entire group of individ…
A subset of individuals in the population from which we actua…
A study that uses an organized plan to choose a sample that r…
Choosing individuals from the population who are easy to reac…
Population
The ... in a statistical study is the entire group of individ…
Sample
A subset of individuals in the population from which we actua…
27 terms
AP Statistics: Chapter 4
Exponential function
Power function
What lists are used for exponential fu…
What lists are used for power functions?
y = abˣ (variable = exponent)
y = axᵇ (variable = base)
(L1, L4)
(L3, L4)
Exponential function
y = abˣ (variable = exponent)
Power function
y = axᵇ (variable = base)
45 terms
The Practice of Statistics - Chapter 4
Population
Sample
Sample survey
Convenience sample
in a statistical study is the entire group of individuals abo…
is the part of the population from which we actually collect…
A study that asks questions of a sample drawn from some popul…
choosing individuals who are easiest to reach.
Population
in a statistical study is the entire group of individuals abo…
Sample
is the part of the population from which we actually collect…
52 terms
Chapter 4 AP Statistics
Bias
Census
Cluster sample
Convenience sample
The design of a statistical study shows bias if it systematic…
A study that attempts to collect data from every individual i…
To take a cluster sample, first divide the population into sm…
A sample selected by taking the members of the population tha…
Bias
The design of a statistical study shows bias if it systematic…
Census
A study that attempts to collect data from every individual i…
39 terms
AP Statistics - Chapter 4
Population
Sample
Sample Survey
Convenience Sample
The entire group of individuals about which we want information
The part of the population from which we actually collect inf…
A survey which is carried out using a sampling method, i.e. i…
Choosing individuals who are easiest to reach...almost guaran…
Population
The entire group of individuals about which we want information
Sample
The part of the population from which we actually collect inf…
39 terms
Statistics chapter 4
Event
Simple Event
Sample Space
P
any collection of results or outcomes of a procedure
an outcome or an event that cannot be further broken down int…
for a procedure consists of all possible simple events; that…
denotes a probability.
Event
any collection of results or outcomes of a procedure
Simple Event
an outcome or an event that cannot be further broken down int…
Chapter 4 Statistics
Experiment
Sample space
Tree diagram
Event
An activity in which there are at least two possible outcomes…
S': a listing of all possible outcomes, using set notation
A visual road map of possible outcomes in an experiment
Any collection of outcomes from an experiment
Experiment
An activity in which there are at least two possible outcomes…
Sample space
S': a listing of all possible outcomes, using set notation
37 terms
Statistics Chapter 4
Population
Sample
Sample Survey
Convenience Sample
The entire group of individuals we want to know about. For ex…
A subset of individuals in the population from which we actua…
Sample survey is a study in which you obtain data from a subs…
Choosing individuals from the population who are easy to reac…
Population
The entire group of individuals we want to know about. For ex…
Sample
A subset of individuals in the population from which we actua…
Statistics Vocab Chapter 4
Random Variable
Discrete
Continuous
Discrete probability distribution
x represents a numerical value associated with each outcome o…
A variable is discrete if it has finite or countable number o…
If the variable has an uncountable number of possible outcome…
Lists each possible value the random variable can assume, tog…
Random Variable
x represents a numerical value associated with each outcome o…
Discrete
A variable is discrete if it has finite or countable number o…
Statistics Chapter 4
Random Variable
A random variable is ________ if its p…
A random variable is _________ if its…
Probability distribution
a numerical variable associated with the outcomes of a random…
discrete
continuous
of a discrete random variable x is a list (or description) of…
Random Variable
a numerical variable associated with the outcomes of a random…
A random variable is ________ if its p…
discrete
40 terms
Elementary Statistics Chapter 4
Experiment
Outcomes
Sample space
Tree Diagram
A process that, when performed, results in one and only one o…
These observations are called the outcomes of the experiment.
The collection of all outcomes for an experiment is called a…
Experiment
A process that, when performed, results in one and only one o…
Outcomes
These observations are called the outcomes of the experiment.
50 terms
Chapter 4 AP Statistics
Bias
Census
Cluster sample
Convenience sample
When a statistical study systematically favors certain outcom…
A study that attempts to collect data from every individual i…
To take a cluster sample, first divide the population into sm…
A sample selected by taking the members of the population tha…
Bias
When a statistical study systematically favors certain outcom…
Census
A study that attempts to collect data from every individual i…
36 terms
AP Statistics Chapter 4
What is the population in a statistica…
What is the sample in a statistical st…
What is a convenience sample, and why…
What is a bias?
the entire group of individuals about which we want information
part of the population from which we actually collect informa…
choosing individuals who are easiest to reach results. Howeve…
design of a statistical study that systematically favors cert…
What is the population in a statistica…
the entire group of individuals about which we want information
What is the sample in a statistical st…
part of the population from which we actually collect informa…
26 terms
Statistics Chapter 4 Quiz 2 Review
Stratification
Stratified random sampling
Cluster Sample
Two Stage sampling
A classification of the units in the population into homogeno…
Stratifying the population and then taking a simple random sa…
When the units in the population are assigned to non-overlapp…
A sampling procedure that involves two steps. For example, ta…
Stratification
A classification of the units in the population into homogeno…
Stratified random sampling
Stratifying the population and then taking a simple random sa…
AP Statistics - Chapter 4
Population
Sample
Sample Survey
Convenience Sample
The entire group of individuals about which we want information
The part of the population from which we actually collect inf…
A survey which is carried out using a sampling method, i.e. i…
Choosing individuals who are easiest to reach...almost guaran…
Population
The entire group of individuals about which we want information
Sample
The part of the population from which we actually collect inf…
Statistics-Chapter 4
Bayes Theorem
Multiplication of Probabilities(And)
Addition of Probablilities(Or)
Mutually Exclusive events
Based on conditions that might be related to the event. P(A|B…
N means multiply
U means add
Bayes Theorem
Based on conditions that might be related to the event. P(A|B…
Multiplication of Probabilities(And)
N means multiply
Statistics Chapter 4
scatter diagram
explanatory variable
response variable
least-squares line
points are plotted on a graph (x,y) and a correlation is found
x value
y value
y= a+bx
scatter diagram
points are plotted on a graph (x,y) and a correlation is found
explanatory variable
x value
23 terms
Business Statistics Chapter 4
Probability
Experiment
Sample Space
Sample Point
A numerical measure of the likelihood that an event will occur
A process that generates well-defined outcomes
The set of all experimental outcomes
An element of the sample space. This represents an experiment…
Probability
A numerical measure of the likelihood that an event will occur
Experiment
A process that generates well-defined outcomes
6 terms
Statistics Chapter 4
Scatter Diagram
Drawing scatter diagram with calculator
Scatter diagram & implied relation
Properties of the linear correlation c…
Scatter diagram is a graph that shows the relationship betwee…
- Enter explanatory variable data in Stat - L1... - Enter respon…
- Positive linear relation: Two variables are positively asso…
1. r is always between -1 and 1... 2. If r = 1 it is a perfect p…
Scatter Diagram
Scatter diagram is a graph that shows the relationship betwee…
Drawing scatter diagram with calculator
- Enter explanatory variable data in Stat - L1... - Enter respon…
8 terms
Statistics: Chapter 4 Vocabulary
Scatter Diagram
Explanatory Variable
Response Variable
Correlation Coefficient
A graph in which the values of two variables are plotted alon…
X-Axis
Y-Axis
r=[nΣ(xy)-(Σx)(Σy)]/[√nΣ(x^2)-(Σx)^2] * [√nΣ(y^2)-(Σy)^2] ; A…
Scatter Diagram
A graph in which the values of two variables are plotted alon…
Explanatory Variable
X-Axis
Statistics Chapter 4 Vocab
Scatter Diagram
Explanatory Variable
REsponse Variable
Correlation Coefficient
A graph in which the values of two variables are plotted alon…
First variable in the pair (x).
Second variable in the pair (y).
A numerical value that measures the strength of a linear rela…
Scatter Diagram
A graph in which the values of two variables are plotted alon…
Explanatory Variable
First variable in the pair (x).
15 terms
Statistics Chapter 4
Area Principle
Bar Chart
Cell
Column Percent
In a statistics display, each data value is represented by th…
A chart that represents the count (or percentage) of each cat…
Each location in a contingency table, representing the values…
The proportion of each column contained in the cell of a freq…
Area Principle
In a statistics display, each data value is represented by th…
Bar Chart
A chart that represents the count (or percentage) of each cat…
23 terms
AP Statistics Chapter 4
sample mean
is sample mean sensitive or insensitiv…
population mean
sample median
= sum of all observations in the sample/ number of observatio…
sensitive
the average x value of the entire population
the middle value in the ordered list of observations... the sing…
sample mean
= sum of all observations in the sample/ number of observatio…
is sample mean sensitive or insensitiv…
sensitive
Statistics Chapter 4
RARE EVENT RULE FOR INFERENTIAL STATIS…
event
Simple event
sample space
if under a given assumption, the probability of a particular…
any collection of results or outcomes of a procedure
an outcome or an event that cannot be further broken down int…
for a procedure consists of all possible simple events. The s…
RARE EVENT RULE FOR INFERENTIAL STATIS…
if under a given assumption, the probability of a particular…
event
any collection of results or outcomes of a procedure
6 terms
Chapter 4 Statistics
Mean
Median
Mode
Mean>Median>Mode
Average
Useful with extreme values such as income data
Most useful for discrete or categorical data with only a few…
Skewed left
Mean
Average
Median
Useful with extreme values such as income data
Statistics Vocab Chapter 4
Scatter Diagram
Explanatory Variable
Response Variable
Correlation Coefficient
A diagram in which there is an x & y axis, with dots displayi…
x axis
y axis
A numerical value that measures the strength of a linear rela…
Scatter Diagram
A diagram in which there is an x & y axis, with dots displayi…
Explanatory Variable
x axis
Statistics Chapter 4
Common Math
Common graph
Regression Analysis
Scatter Plot
We are given an equation and we use it to solve problems
A line showing the relationship between the two variables.
Instead of an equation, we are given data in the form of a ta…
The graph of the set of points whose coordinates match the da…
Common Math
We are given an equation and we use it to solve problems
Common graph
A line showing the relationship between the two variables.
9 terms
Statistics - Chapter 4 Vocab
Response Variable
Explanatory Variable
Scatter Diagram
Scatter Plot
The dependent variable
The independent variable; explains he response variable
Graph showing the relationship between two numeric variables:…
Displays the relationship between two variables. DO NOT conne…
Response Variable
The dependent variable
Explanatory Variable
The independent variable; explains he response variable
41 terms
Statistics chapter 4
Sample survey
Population
Sample
Census
Is a study that uses an organized plan to choose a sample tha…
The entire group of individuals that we want information about
Is a part of the population that we actually examine in order…
Attempts to contact every individual in the entire population
Sample survey
Is a study that uses an organized plan to choose a sample tha…
Population
The entire group of individuals that we want information about
18 terms
Statistics - Chapter 4
Statistics
descriptive stats
inferential stats
variables
Broad range of techniques and procedures for gathering, organ…
describe a set of quantitative data
make inferences about large groups of a people by analyzing d…
characteristics on which people differ
Statistics
Broad range of techniques and procedures for gathering, organ…
descriptive stats
describe a set of quantitative data
14 terms
Statistics: Chapter 4
Deviation Score
Interquartile Range
Range
Standard Deviation
A raw score minus the mean of the distribution whether the di…
Range of scores that contain the middle 50% of a distribution.
The highest score minus the lowest score.
Descriptive measure of the dispersion of scores around the me…
Deviation Score
A raw score minus the mean of the distribution whether the di…
Interquartile Range
Range of scores that contain the middle 50% of a distribution.
10 terms
Statistics Chapter 4
Probability
Sample Space
Event
Probability of an Event
the study of random phenomena. The probability of any outcome…
the set of all possible outcomes of an experiment with random…
an outcome or outcomes in a sample space... example: Experiment…
number of ways the event can occur/number of members in the s…
Probability
the study of random phenomena. The probability of any outcome…
Sample Space
the set of all possible outcomes of an experiment with random…
19 terms
Statistics (Chapter 4)
Bivariate data
Response variable
Explanatory variable
Predictor variable
Data in which two variables are measured.
Variable that is measured; the dependent variable.
Variable that is controlled; the independent variable.
Variable that is manipulated in an experiment.
Bivariate data
Data in which two variables are measured.
Response variable
Variable that is measured; the dependent variable.
25 terms
Statistics Chapter 4
Sample Mean
Sample Median
Comparing Mean and Median of a Histogram
Histogram skewed
The sample mean consists of a numerical data set from a sampl…
The sample median is the middle number in which half (50%) of…
As stated in the previous slide, the sample median is the val…
If the histogram is skewed to the left (negatively skewed), t…
Sample Mean
The sample mean consists of a numerical data set from a sampl…
Sample Median
The sample median is the middle number in which half (50%) of…
16 terms
Chapter 4 Statistics
random variable
discrete
continuous
probability distribution of a discrete…
a variable that assumes numerical values associated with the…
random variables that can assume a countable number (finite o…
random variables the can assume values corresponding to any o…
a graph, table, or formula that specifies thee probability as…
random variable
a variable that assumes numerical values associated with the…
discrete
random variables that can assume a countable number (finite o…
Statistics Chapter 4
4 processes of statistics
Display
Summary
Statistic
-data production... -displaying and summarizing data... -probabilit…
pie chart, bar graph
count, percent, proportion
number summarizing sample (p-hat)
4 processes of statistics
-data production... -displaying and summarizing data... -probabilit…
Display
pie chart, bar graph
Psychology Statistics Chapter 4
"Sigma"X
Measure of Central Tendency
Mode
Unimodal
To add the X scores
A score that summarizes the location of a distribution on a v…
The score that occurs the most frequently. Typically used to…
When a polygon has one hump (like a normal curve)
"Sigma"X
To add the X scores
Measure of Central Tendency
A score that summarizes the location of a distribution on a v…
Statistics Chapter 4
Scatterplot
Trend
Shape
Strength
Each point represents one observation
centre
shape
how tightly pact together or dispersed they are
Scatterplot
Each point represents one observation
Trend
centre
Statistics Chapter 4 Vocabulary
Population
Sample
Convenience sample
Bias
the entire pool from which a statistical sample is drawn
set of data collected and/or selected from a statistical popu…
made up of people who are easy to reach.
the tendency of a measurement process to over- or under-estim…
Population
the entire pool from which a statistical sample is drawn
Sample
set of data collected and/or selected from a statistical popu…
27 terms
Statistics for People Who Hate Statistics- chapter 4
ogive
frequency distribution
central tendency
variability
cumulative frequency polygon
method of tallying and representing how often certain scores…
best for describing a group of data
measure of how diverse or different, scores are from one anot…
ogive
cumulative frequency polygon
frequency distribution
method of tallying and representing how often certain scores…
Statistics Vocabulary - Chapter 4
Bivariate Data
Response Variable
Explanatory Variable
Scatter Diagram
data in which two variables are measured on an individual.
the variable whose value can be explained by the value of the…
the variable that explains or influences changes in the respo…
a graph that shows the relationship between two quantitative…
Bivariate Data
data in which two variables are measured on an individual.
Response Variable
the variable whose value can be explained by the value of the…
16 terms
Statistics Chapter 4 Vocab
Area principle
Bar chart (relative frequency bar chart)
Categorical data condition
Column percent
A principle that helps to interpret statistical information w…
A chart that represents the count (or percentage) of each cat…
Data are counts or percentages of individuals in categories
The proportion of each column contained in the cell of a cont…
Area principle
A principle that helps to interpret statistical information w…
Bar chart (relative frequency bar chart)
A chart that represents the count (or percentage) of each cat…
12 terms
Statistics Chapter 4
census
sampling
inference
Simple Random Sample
to obtain information about every member of the population, a…
studying a part to gain information about the whole is
the purpose of sampling
SRS stands for this
census
to obtain information about every member of the population, a…
sampling
studying a part to gain information about the whole is
7 terms
Statistics: Chapter 4
correlation
positive correlation
negative correlation
no correlation
relationship between explanatory and response variables
variables react in the same manner
variables react in opposite manners
no significant relationship between the variables
correlation
relationship between explanatory and response variables
positive correlation
variables react in the same manner
48 terms
Chapter 4 Statistics Terms
What are the 3 general ways to gather…
Observational study
Experiment
Simulation
Observational studies, experiments, simulations
Observes individuals and measures variables of interest but d…
Deliberately imposes some treatment on individuals to measure…
Imitation of chance behavior, based on a model that accuratel…
What are the 3 general ways to gather…
Observational studies, experiments, simulations
Observational study
Observes individuals and measures variables of interest but d…
Statistics Chapter 4
Univariate data
Bivariate data
patterns in bivariate data
looks at only one variable
examines two variables
Scatter plots reveal what?
Univariate data
looks at only one variable
Bivariate data
examines two variables
31 terms
Chapter 4 Statistics Vocabulary
Population
Sample
Sample Survey
Convenience Sample
The ... in a statistical study is the entire group of individ…
A subset of individuals in the population from which we actua…
A study that uses an organized plan to choose a sample that r…
Choosing individuals from the population who are easy to reac…
Population
The ... in a statistical study is the entire group of individ…
Sample
A subset of individuals in the population from which we actua…
Statistics Vocabulary - Chapter 4
Scatter Diagram
Explanatory Variable
Response Variable
Correlation Coefficient
the data pairs (x,y) are plotted as individual points on a gr…
the first data value (x).
the second data value (y).
a numerical value that measures the strength of a linear rela…
Scatter Diagram
the data pairs (x,y) are plotted as individual points on a gr…
Explanatory Variable
the first data value (x).
1 of 10